PHP先前通过CURL

Question

我有两个脚本，request.php通过PHP CURL向receiver.php发送一个post请求，我想立即关闭连接并响应CURL并继续在后台运行我的脚本。

下面的脚本无法实现我的期望，感谢能够提供正确方法的人。非常感谢你~~~

request.php

$curl = curl_init();
curl_setopt_array($curl, array(
    CURLOPT_RETURNTRANSFER => 1,
    CURLOPT_URL => 'http://example.com/receiver.php',
    CURLOPT_POST => 1,
    CURLOPT_POSTFIELDS => http_build_query($params)
));
curl_exec($curl);
curl_close($curl);

receiver.php

ob_end_clean();
header("Connection: close");
ignore_user_abort(true);
ob_start();
echo('Text the user will see');
$size = ob_get_length();
header("Content-Length: $size");
ob_end_flush();
flush();

sleep(30);
echo('Text user will never see');